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Codeforces Round (Div. 2)
2 days
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games
combine-tags-by-or
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
2062E2
The Game (Hard Version)
data structures
,
dfs and similar
,
games
,
graphs
,
implementation
,
trees
3000
x282
2062E1
The Game (Easy Version)
data structures
,
dfs and similar
,
games
,
graphs
,
greedy
,
trees
2000
x3189
2060C
Game of Mathletes
games
,
greedy
,
sortings
,
two pointers
900
x23704
2055A
Two Frogs
constructive algorithms
,
games
,
greedy
,
math
800
x28509
2053E
Resourceful Caterpillar Sequence
dfs and similar
,
dp
,
games
,
graphs
,
greedy
,
trees
1900
x3559
2045F
Grid Game 3-angle
games
,
math
3000
x75
2043F
Nim
bitmasks
,
brute force
,
combinatorics
,
dp
,
games
,
greedy
,
implementation
,
shortest paths
2700
x666
2042B
Game with Colored Marbles
games
,
greedy
900
x15935
2040A
Game of Division
games
,
math
800
x21602
2038A
Bonus Project
games
,
greedy
1400
x3851
2032F
Peanuts
combinatorics
,
dp
,
games
,
math
2700
x340
2030C
A TRUE Battle
brute force
,
games
,
greedy
1100
x17454
2030B
Minimise Oneness
combinatorics
,
constructive algorithms
,
games
,
math
800
x21453
2029B
Replacement
constructive algorithms
,
games
,
strings
1100
x9792
2028E
Alice's Adventures in the Rabbit Hole
combinatorics
,
dfs and similar
,
dp
,
games
,
greedy
,
math
,
probabilities
,
trees
2300
x1474
2027E1
Bit Game (Easy Version)
bitmasks
,
brute force
,
games
,
math
2800
x170
2013F1
Game in Tree (Easy Version)
binary search
,
brute force
,
data structures
,
dp
,
games
,
greedy
,
implementation
,
trees
2700
x513
2006A
Iris and Game on the Tree
constructive algorithms
,
dfs and similar
,
games
,
graphs
,
greedy
,
trees
1700
x7214
2005E2
Subtangle Game (Hard Version)
data structures
,
dp
,
games
,
greedy
,
implementation
2500
x864
2005E1
Subtangle Game (Easy Version)
dp
,
games
,
greedy
,
implementation
2100
x2874
2004E
Not a Nim Problem
brute force
,
games
,
math
,
number theory
2100
x4308
2004C
Splitting Items
games
,
greedy
,
sortings
1100
x24305
2003B
Turtle and Piggy Are Playing a Game 2
games
,
greedy
,
sortings
800
x25906
2002B
Removals Game
constructive algorithms
,
games
1000
x20100
1994H
Fortnite
combinatorics
,
constructive algorithms
,
games
,
greedy
,
hashing
,
interactive
,
math
,
number theory
,
strings
3500
x714
1991I
Grid Game
constructive algorithms
,
games
,
graph matchings
,
greedy
,
interactive
3500
x136
1991H
Prime Split Game
bitmasks
,
dp
,
fft
,
games
,
math
,
number theory
3300
x520
1991E
Coloring Game
constructive algorithms
,
dfs and similar
,
games
,
graphs
,
greedy
,
interactive
1900
x4395
1990A
Submission Bait
brute force
,
games
,
greedy
,
sortings
900
x23852
1987D
World is Mine
dp
,
games
1800
x7489
1972B
Coin Games
games
900
x22778
1970C3
Game on Tree (Hard)
dfs and similar
,
dp
,
games
,
trees
1900
x1742
1970C2
Game on Tree (Medium)
dfs and similar
,
dp
,
games
,
trees
1700
x3113
1970C1
Game on Tree (Easy)
games
1400
x3838
1968D
Permutation Game
brute force
,
dfs and similar
,
games
,
graphs
,
greedy
,
math
1300
x15578
1966A
Card Exchange
constructive algorithms
,
games
,
greedy
800
x18485
1965E
Connected Cubes
constructive algorithms
,
games
3100
x323
1965A
Everything Nim
games
,
greedy
,
math
,
sortings
1400
x14518
1956B
Nene and the Card Game
games
,
greedy
800
x21942
1956A
Nene's Game
binary search
,
brute force
,
data structures
,
games
,
greedy
800
x22431
1955F
Unfair Game
dp
,
games
,
greedy
,
math
,
schedules
1800
x7481
1952E
Sweep Line
*special problem
,
combinatorics
,
games
,
math
x268
1951H
Thanos Snap
binary search
,
dp
,
games
,
greedy
,
trees
3200
x292
1943A
MEX Game 1
games
,
greedy
1300
x18882
1942E
Farm Game
combinatorics
,
games
2300
x1760
1939D
Big Persimmon
*special problem
,
dp
,
games
x102
1934D2
XOR Break --- Game Version
bitmasks
,
games
,
greedy
,
interactive
2400
x1473
1931E
Anna and the Valentine's Day Gift
games
,
greedy
,
math
,
sortings
1400
x17446
1929C
Sasha and the Casino
binary search
,
brute force
,
constructive algorithms
,
games
,
greedy
,
math
1400
x15609
1921E
Eat the Chip
brute force
,
games
,
greedy
,
math
1600
x10224
1920B
Summation Game
games
,
greedy
,
math
,
sortings
1100
x21529
1919G
Tree LGM
constructive algorithms
,
divide and conquer
,
games
,
trees
3500
x191
1919A
Wallet Exchange
games
,
math
800
x34282
1916C
Training Before the Olympiad
constructive algorithms
,
games
,
greedy
,
implementation
,
math
1200
x18569
1914E2
Game with Marbles (Hard Version)
games
,
greedy
,
sortings
1400
x13107
1914E1
Game with Marbles (Easy Version)
brute force
,
games
,
greedy
,
sortings
1400
x12839
1906G
Grid Game 2
games
,
number theory
2900
x225
1899A
Game with Integers
games
,
math
,
number theory
800
x52980
1895E
Infinite Card Game
binary search
,
brute force
,
data structures
,
dfs and similar
,
dp
,
dsu
,
games
,
graphs
,
greedy
,
sortings
,
two pointers
2300
x1636
1874A
Jellyfish and Game
brute force
,
games
,
greedy
,
implementation
1200
x17700
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x7931
1867C
Salyg1n and the MEX Game
constructive algorithms
,
data structures
,
games
,
greedy
,
interactive
1300
x11661
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x816
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2740
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x13956
1858A
Buttons
games
,
greedy
,
math
800
x42486
1848A
Vika and Her Friends
games
,
math
900
x17219
1844A
Subtraction Game
constructive algorithms
,
games
800
x24974
1842A
Tenzing and Tsondu
games
,
math
800
x20075
1841A
Game with Board
constructive algorithms
,
games
800
x25083
1834C
Game with Reversing
games
,
greedy
,
math
,
strings
1200
x13807
1823E
Removing Graph
brute force
,
dp
,
games
,
graphs
,
math
2500
x1297
1817D
Toy Machine
constructive algorithms
,
games
,
implementation
2700
x889
1796E
Colored Subgraphs
dfs and similar
,
dp
,
games
,
greedy
,
trees
2500
x795
1784E
Infinite Game
brute force
,
combinatorics
,
dp
,
games
,
probabilities
3100
x355
1776I
Spinach Pizza
games
,
geometry
,
greedy
,
interactive
2500
x714
1776C
Library game
games
,
greedy
,
interactive
,
sortings
2500
x834
1773I
Interactive Factorial Guessing
brute force
,
games
,
implementation
,
interactive
2500
x503
1772E
Permutation Game
games
1700
x6977
1770D
Koxia and Game
constructive algorithms
,
data structures
,
dfs and similar
,
dsu
,
flows
,
games
,
graph matchings
,
graphs
,
implementation
2000
x3984
1749C
Number Game
binary search
,
data structures
,
games
,
greedy
,
implementation
1400
x14511
1747C
Swap Game
games
1200
x21784
1740C
Bricks and Bags
constructive algorithms
,
games
,
greedy
,
sortings
1400
x11405
1739C
Card Game
combinatorics
,
constructive algorithms
,
dp
,
games
1500
x9345
1738C
Even Number Addicts
dp
,
games
,
greedy
,
math
1500
x11626
1737C
Ela and Crickets
constructive algorithms
,
games
,
implementation
,
math
1500
x5935
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x7516
1719A
Chip Game
games
,
math
800
x25841
1710E
Two Arrays
binary search
,
games
,
graph matchings
2400
x535
1704F
Colouring Game
constructive algorithms
,
dp
,
games
2600
x1087
1695B
Circle Game
games
,
greedy
1000
x18852
1695A
Subrectangle Guess
games
800
x16462
1684A
Digit Minimization
constructive algorithms
,
games
,
math
,
strings
800
x24148
1681A
Game with Cards
games
,
greedy
800
x21150
1673A
Subtle Substring Subtraction
games
,
greedy
,
strings
800
x18596
1672A
Log Chopping
games
,
implementation
,
math
800
x16285
1665D
GCD Guess
bitmasks
,
chinese remainder theorem
,
constructive algorithms
,
games
,
interactive
,
math
,
number theory
2000
x4108
1659F
Tree and Permutation Game
dfs and similar
,
games
,
graphs
,
trees
3000
x225
1658E
Gojou and Matrix Game
data structures
,
dp
,
games
,
hashing
,
implementation
,
math
,
number theory
,
sortings
2500
x1089
1628D2
Game on Sum (Hard Version)
combinatorics
,
dp
,
games
,
math
2400
x2209
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